221000200101 has 48 divisors (see below), whose sum is σ = 338026686400. Its totient is φ = 138748225536.

The previous prime is 221000200061. The next prime is 221000200111. The reversal of 221000200101 is 101002000122.

It is not a de Polignac number, because 221000200101 - 2²⁹ = 220463329189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221000200111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78842766 + ... + 78845568.

Almost surely, 2^221000200101 is an apocalyptic number.

It is an amenable number.

221000200101 is a deficient number, since it is larger than the sum of its proper divisors (117026486299).

221000200101 is a wasteful number, since it uses less digits than its factorization.

221000200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410 (or 5407 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 221000200101 its reverse (101002000122), we get a palindrome (322002200223).

The spelling of 221000200101 in words is "two hundred twenty-one billion, two hundred thousand, one hundred one".